((E)-4-Dibenzylamino-but-2-enyl)-phosphonic acid diethyl ester
(5-aza-5-cyclohexylpenta-2,4-dienyl)diethoxyphosphin-1-one
(E)-(4-Oxo-2-butenyl)phosphonsaeure-diethylester
(2E,4Z)-5-phenylhexa-2,4-dienal
(E)-diethyl (4-hydroxy-2-buten-1-yl)phosphonate